Reprinted with permission from the University of Nebraska State Museum from:
Ribble, D. W. 1968. Revisions of two subgenera of Andrena, Micrandrena Ashmead and Derandrena new subgenus (Hymenoptera: Apoidea). Bulletin of the University of Nebraska State Museum 8: 1-124.
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Andrena neonana has about the same range as, and the superficial appearance of personata. Both sexes of neonana have coarse rugae on the enclosure of the propodeum (like Trachandrena). The rest of the propodeum is also coarsely sculptured, and its posterior and lateral surfaces are separated by a large carina. The hind tibia of the female is quite narrow. The male has a yellow clypeus and long, dull antennae.
The descriptions below are based mainly on a male and a female from Lamont, Florida (April 9, 1941, J. Pearson). Only 52 specimens of this species are known.
FEMALE. MEASUREMENTS AND RATIOS. — Length, 6.1 mm; width of mesothorax, 1.9 mm; wing length from tegula, 5.0 mm; facial length/width, 1.00; foveal length/width, 3.11.
INTEGUMENTAL COLOR. — Black to dark brown (without reflections of other colors) except: antenna medium brown below; veins amber; pterostigma dark amber; tegula amber; terga with wide amber apices; sterna with narrower amber apices; tarsi yellowish; color otherwise as in piperi.
STRUCTURE. — Sculpturing in general finer over entire body than in piperi. Head otherwise as in piperi except: scape distinctly longer than flagellar segments 1-4; flagellar segment 1 about half again as long as 2; segment 2 much shorter than 3, tapered toward base; segment 3 subequal to 4 in length, not tapered; eye about four times as long as broad in anterior view; inner eye margins nearly parallel below; maxillary palpus with segments in ratio of about 1.8:1.7:1.2:1.3:1.2:1.0; labial palpus with segments in ratio of about 2.3:1.1:1.0:1.7; labral process two-thirds as wide as and two-thirds as long as entire labrum, apical margin evenly rounded from side to side; clypeus shiny, shagreening weak in center; genal area slightly wider than eye in lateral view; vertex extending past lateral ocellus by one ocellar width; surface between ocelli about as shiny and rough as surface above fovea.
Mesosoma as in piperi except: scutellar surface smoother than mesoscutal; metanotal surface rougher than mesoscutal; dorsal enclosure of propodeum with coarse irregular rugae (like Trachandrena), posterior and lateral surfaces of propodeum separated by a large carina, posterior and dorsolateral surfaces coarsely sculptured with irregular medium-sized rugae; hind tibia slender, half again as wide as basitarsus; first transverse cubital vein ending about three vein widths from pterostigma.
Metasoma as in piperi except pygidial plate raised slightly in center.
VESTITURE. — Hairs as in piperi except: hairs on dorsum of thorax more scattered, thorax with less moss-like appearance; hairs nearly absent on tergum 1; terga 2-4 hairs (except apical fasciae) few, scattered, mostly simple, abdomen not having a dusty appearance; apical fasciae on terga 2-4 reduced to a few scattered hairs laterally.
MALE. MEASUREMENTS AND RATIOS. — Length, 5.6 mm; width of mesothorax, 1.4 mm; wing length from tegula, 4.4 mm; facial length/width, 1.04; flagellar segment 1/segment 2, 0.47.
INTEGUMENTAL COLOR. — Black to brown (without reflections of other colors) except: flagellum orange-brown below; distitarsi yellowish; color otherwise as in piperi.
STRUCTURE. — Sculpturing in general finer over entire body than in piperi. Head otherwise as in piperi except: antenna reaching to abdomen; scape reaching to within one and one-half ocellar distances of medium ocellus, slightly shorter than flagellar segments 1 and 2; segment 1 less than half as long as 2 or 3; segment 2 not tapered, equal to 3 in length; middle segments much longer than broad; eye four times as long as broad in anterior view; inner eye margins distinctly convergent below; malar space about eight times as wide as long; maxillary palpus with segments in ratio of about 1.2:1.5:1.2:1.2:1.0:1.2; labial palpus with segments in ratio of about 3.3:1.7:1.0:1.7; labrum slightly more than two and one-half times as wide as long; labral process half as wide and two-thirds as long as entire labrum, expanded towards base, apex truncate; clypeus slightly less than twice as broad as long, shagreening faint.
Mesosoma as in neonana female except: scutellar surface sculptured like mesoscutal; lateral surface of propodeum much coarser than metepisternal; hind tibia unmodified.
Exposed metasoma as in piperi.
Sternum 7 distinctly emarginate at apex, producing two large, rounded lobes, each lobe bearing few long, simple or weakly branched setae; small setae on apex below lobe (fig. 14). Sternum 8 (fig. 15) much like piperi except: basal plate little different in shape; apex more emarginate. Gonocoxite tapering to narrowly rounded apex, bent slightly down apically, dorsal part of apex with weakly branched setae; dorsal lobes short, wide. Penis valve bent downward, apex narrowly rounded; medially greatly expanded; with dorsal lamellae (figs. 11-13).
VESTITURE. — Hairs as in piperi except: tergum 1 nearly bare; few short, scattered, mostly simple hairs on abdominal terga 2-4; apical abdominal fasciae indistinct, reduced to a few hairs laterally.
VARIATION. — The little material available for study exhibits little variation. There are minor variations in the sculpturing, the position of the first transverse cubital vein in relation to the pterostigma, and body size.
Reprinted with permission from: Mitchell, T.B. 1960. Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.
FEMALE — Length 7 mm.; clypeus broadly convex, projecting about one-third below suborbital line, smooth and shining, punctures irregular, rather deep, fine and close; facial foveae quite narrow, occupying above about half of space between eyes and ocelli (as in fragariana, fig. 29), covered with pale ochraceous tomentum; space between margin of vertex and lateral ocelli somewhat less than their diameter; cheeks slightly narrower than eyes, rounded posteriorly, shining, punctures hardly evident; malar space lacking; basal segment of flagellum slightly shorter than 2nd and 3rd combined; flagellum dull brownish-ferruginous; process of labrum broadly semicircular, median length slightly less than half of breadth; pubescence of head, thorax and legs short, rather thin, entirely whitish, somewhat tinged with yellowish above; thoracic integument dull, finely tessellate, punctures of scutum very fine and obscure, well separated, becoming rather sparse toward center posteriorly, surface somewhat shining, those on scutellum more minute and obscure. surface shining; pleura without visible, distinct punctures; dorsal area of propodeum extensive, nearly horizontal, triangle rather coarsely subrugose; propodeal corbicula whitish, poorly developed, quite short, without an anterior fringe; trochanteral floccus rather well developed, whitish; hind tibiae rather slender but somewhat broadened apically, apex nearly twice width of the basitarsus,: front and middle basitarsi slender, somewhat narrower than their respective tibiae; 2nd submarginal cell somewhat shorter than 3rd, receiving 1st recurrent slightly beyond middle; abdominal terga smooth, tergum 1 shining, 2nd and following terga dull, microscopically tessellate, punctures inevident, depressed apical areas very shallow, occupying medially about one-third length of discs, brownish, becoming yellowish-hyaline along rims, discal pubescence extremely short, thin and sparse, entirely pale, forming very loose, thin and obscure, apical, pale fasciae on terga 2-4, those on 2 and 3 somewhat interrupted medially, tergum 5 with a brownish, apical fimbria.
MALE — Length 5 mm.; clypeus slightly convex, projecting about one-third below suborbital line, yellow, except for two small black spots and the dark apical rim, smooth and shining, very finely punctate, punctures rather sparse medially, becoming quite close at extreme sides; space between margin of vertex and lateral ocelli somewhat less than their diameter; cheeks narrower than eyes, rounded posteriorly, rather dull, except along eye margin, punctures exceedingly minute and obscure, pubescence rather dense, elongate below; malar space extremely short; basal segment of flagellum very short, not much longer than broad, much shorter than 2nd and following segments; process of labrum about twice as broad as long, slightly narrowed to the rather broadly truncate apex; mandibles rather short, with a minute, inner, subapical tooth, overlapping but very slightly; pubescence of head, thorax and legs entirely white; thoracic integument rather dull, microscopically tessellate, punctures of scutum exceedingly minute and obscure, well separated anteriorly, becoming very sparse posteriorly and hardly visible on the more shining scutellum; pleura more densely tessellate, without visible punctures; dorsal area of propodeum quite extensive, nearly horizontal, triangle rather coarsely rugose; basitarsi testaceous, slender and elongate, considerably narrower than their respective tibiae; 2nd submarginal cell considerably shorter than 3rd, receiving 1st recurrent just beyond middle; abdominal terga rather smooth, microscopically tessellate, but tergum 1 somewhat shining, punctures exceedingly minute and obscure, hardly visible, apical impressed areas rather narrow and shallow, somewhat shining, discal pubescence extremely short, sparse and obscure, entirely whitish, fasciae not developed; apical portion of sternum 8 quite slender and elongate, apex slightly dilated, rather broadly rounded, clothed beneath with rather long, sparse, pale pubescence; penis valves slender apically, dilated basally, this part excavated laterally beneath, gonocoxites rather short and slender, not dilated apically, gonocoxal lobes but very slightly produced, rather broadly rounded.
DISTRIBUTION — Indiana and Ohio, south to Louisiana and Florida; April and May.
FLOWER RECORDS — Ilex and Malus. The male of neonana has not been recognized nor described previously.